oggdec print progress information too fast. Slows process and system down.

I'm using oggdec on OpenBSD where I do not have accelerated graphics. The fast output of progress information from oggdec slows not only the decode process down but also the system. For example "oggdec -Q -o bar.wav foo.ogg" takes about 1.2 seconds while "oggdec -o bar.wav foo.ogg" takes about 3.1 seconds. About 2 seconds wasted just to print progress information.

I made a quick hack that generates a SIGALRM every 250 ms or so that sets a variable telling the decoder to print progress information, i.e. "if (!quiet && seekable && update) { update = 0; ... }"... I'm not sure if this is the way to go but at least it fixes the problem for me. I can always just use -Q or hide the xterm but I want to see the progress information.